What is SMS/800?
The 800 Service Management System (SMS/800) is administered by SMS/800, Inc. SMS/800
is a centralized system that performs Toll Free (800, 888, 877, 866, 855, and 844) number
management. At this time, planning is underway for the future Toll Free codes of
833 and 822. All Toll Free Service Providers that assign Toll Free numbers for use
within the North American Numbering Plan (NANP) must use SMS/800 to verify the availability
of specific numbers, reserve them, create Customer Records, and download records
to Service Control Points (SCPs) to facilitate call processing.
SCPs are real-time database systems that contain instructions for routing calls.
SCPs are updated by SMS/800 with call routing instructions. Local Exchange Carriers
(LECs) query the SCPs to determine how to complete a Toll Free call.
SMS/800 services are provided to both Responsible Organizations (Resp Orgs) and
Service Control Point Owner/Operators (SCP O/Os). Resp Orgs are organizations that
use SMS/800 to perform number management functions for Toll Free customers. SCP
O/Os may perform these functions directly as a Resp Org or arrange to have them
completed by another Resp Org. It usually takes just a few minutes to enter call
processing information for any given Toll Free number.